Carbureter.



c. H. CL-AU'DEL.

CARBURETER. APPLICATION FIL ED MAY 5. I914.

Patented Fehl, 1916.

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CHARLES HENRI CLAUDFL, OF

IlEVALLGIS-PERREQ FRANCE.

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Specification of Letters Patent.

Patented Feb. 1, 1916.

Original application filed February 6, 1912, Serial No. 675,738. Divided and this application filed May 5,

r 1914. Serial No. 836,572.

To all whom it may concern:

Be it known that 1, CHARLES HENRI CLAUDEL, a citizen of the Republic of France, residing at Levallois-Perret, Seine, France, have invented new and useful Impfdvements in: Carbureters for Internal- Qombustion Motors, of which the following is a specification.

This invention relates to carbureters of the general character set forth in a prior application for U. S. Letters Patent, (filed February 6, 1912, Serial No. 675,788), of which the present application 'is a division,

. the type of carbureter above referred to being illill'ilCtGllZGCl by theemployment of anozzle discharging into the suction space and having associated with it a chamber provided at a point of greater suction with a discharge orifice for the mixed air and fuel and at a point of less suction with an inlet orifice for the admission of air, in connect-ion with passages for admitting liquid fuel to the nozzle and to the chamber independently of the admission of air to the latter. In connection with the parts just referred to I employ in the present case certain additional features of construction and arrangement which are hereinafter described in connection with the accompanying drawing, in which:

Figures; 1, 2 and 3 are central vertical. sections illustrating various constructions embodying my present improvements; and Figs. 4- and illustrate the shape of the outlet and inlet openings of a rotai 'y cock plug shown in Figs. 1, 2 and 3. Figl 5 shows the same inlet opening as Fig; '5, but with the parts in a ditferentposition.

In Fig. 1, aindicates a nozzle or jet con tained in a suitable casing or conduit A and provided at its upper end with an orifice 0 for discharging liquid fuel into the suction space. This nozzle ais' supplied with the liquid fuel through'its lower end, the constant supply level being indicated by the line L, and is surrounded by concentric tubes 3) and c and by an upright cup d, the top of which extends slightly above the level L; This cup is supplied with the liquid fuel through a lateral perforation 0 in the nozzle a and is kept full to the level L when the motor is at rest. The tube 0 is located withn the cup (Z and terminates at its lower end above the ottoni'of said cup, while at its a" per end it is connected to the outer tube 6, so that the tubes and cup form an annular chamber 6 surrounding the nozzle (1 and having alternating battles therein. At the upper portion of this chamber there are one or more outlet orifices i adjacent to the nozzle,

and at the lower portion of the chamber the outer tube Z) is provided with one or more inlet orifices 2'', these orifices 2' and a" being thus located in regions of greater and less vacuum, respectively. The upper end of thenozzle (6, containing the discharge orifice 0, is shownas located within the interior of a rotatable cock plug 9 having its outlet l and inlet orifices f and f shaped as shown in Figs. 4: and 5, respectively,the interior of the plug 9 constituting a carburation chamher. To the parts above mentioned, which are shown in substantially the same form in my prior application above referred to, I add in the present case a diaphragm M extending across the interior of the'nozzle a below the constant supply level L, and above this diaphragm I provide a-perforation n in the nozzle 0,, whereby the latter is su plied with liquid fuel from thecup d. n Fig. 1 this diaphragm M isimpcrforate, so that the orifice 0 is supplied wholly by way of the perforations 0 and n, and when the motor is running at a low speed it is sup plied with fuel exclusively or mainly through this orific 0, the vacuum behind the plug 9 being very small while the vacuum in its interior is still considerable. At higher speeds, however, or'when the plug 9 is open to a "greater extent, the suction in the casing A causes an air current to pass through the annular chamber 0 from the inlet orifice i, where the suction is less, to the empties the latter of'its liquid contents and in, ascending along the nozzle a takes up and sprays the liquid fuel entering at 0', the mixture being discharged at 2' into the column of air drawn through the casing, as explained in my prior application.

'In Fig. 2 an arrangement is shown which is similar to .that illustrated in Fig. 1, except that the diaphragm M is provided with a small perforation m of sufiicient size to supply the orifice 0 at low speeds, while at higher speeds the supply is increased by way of the perforations 0 and n. Thus in both cases the effect of the diaphragm is to diminish or retardthe fiow of liquid fhel ,to the orifice 0', thus rendering the discharge,v at 0 more or less independentof Variatieins in the degree of vacuum which exists at the discharge orifice i of the annular chamber 0, In Fig. 2, also, I have shown a cage it surrounding the upper portion of the nozzle c and its discharge orifice 0' and provided acent to said orifice with outlet openings I and at'its lower end with inlet openings 1. This form of cage is similar to one of the. forms shown in my prior application, and serves to diminish the efi'ect of an acceleration of speed on the amount of liquid fuel discharged through the orifice 0 and-thus to prevent an excessive discharge at high speeds, assuming that said orifice furnishes a suitable supply at low speeds. p I

In Fig. 3 a somewhat similar cage it is shown, except that the openings represented by i and I in 2 are here merged into openings I? which serve alternately the admission of'air into the lower end of the cage h when the motor is running at low speeds and for thedischarge of the mixed air and sprayed fuel into the outer suction column when the moter is running with an open throttle. The diaphragm abovedescribed however, 'whether perforated or otherwise, may be'nsed in connection with various other arrangements of the nozzle and annular chamber, with or without a cage such as it or it, and any other suitable cock 01' valve may be substituted forthe specific form of cock plugherein shown.

1. A carburetorcomprising a nozzle discharging at its upper portion into the suctionspace, a'dia hragm located below the constant supply evel and dividing the interior of the nozzle into two parts, means for admitting liquid fuel to said nozzle be- '-low the diaphragm, and a chamber associated with the nozzle and provided at a oint of' less suction with an orifice for the a mission of'air and at a point of greate 'f suction with a discharge orifice for the mixed air and fuel, said nozzle being provided with an opening located below the diaphragm and with another opening located above said diaphragm and affording communication be tween said chamber and the interior of the nozzle. J

2. A carburetor comprising a nozzle discharging at its upper portion into the suction space, a perforated diaphragm dividing said nozzle into two parts and located below the constant supply level, means for admitting liquid fuel to the lower portion of the nozzle,anda concentric tube associated with the nozzle and forming a chamber having an air inlet and a discharge outlet located respectively in regions of less and, greater suction, said nozzle "being provided with an opening located below the diaphragm for supplying liquid fuel to said chamber.

3. A carbureter comprising a nozzle discharging at its upper portion into the suction space, a, diaphragm provided with a perforation and dividing the interior of the nozzle into two parts below-the constant supply level, means .for admitting fuel to said nozzle below the diaphragm, and a chamber associated with the nozzle and provided at a point of less suction with an orifice for the of the nozzle is placed in communicationwith said chamber.

4. A carbureter comprising a nozzle dis-' charging at its upper portion into the suction space, a diaphragm located below the constant supply level and dividing the interior of the nozzle into two parts, means for admitting fuel to said nozzle below the diaphragm, a chamber associated with. the nozzle and provided at a point of less suction with an orifice for the admission of air and at a point of greater suction with a discharge orifice for the mixed air and fuel, said nozzle beingprovided with openings located above and below the diaphragm, respectively, level, whereby the interior of the nozzle is placed in communication with said chamber, andan air-circulating cage surrounding the discharge outlet from the'nozzle.

5. A carbureter comprising a nozzle discharging at its upper portion into the suc-. tion space, a diaphragm located below the constant supply level and dividing the interior of the nozzle into two parts, means for admitting liquid, fuel to said nozzle be low the diaphragm, a chamber associated with the nozzle and provided at a point of less suction with an orifice for the admission of air and at a point of greater suction with a discharge orifice for the mixed air and fuel, said nozzle being provided with openand below the constant feed her, an air-circulating cage surrounding the 1914.

ings located above and below the diaphragm, orifice of said chamber being located behind 10 respectively, and below the constant supply the cock plug;

level, whereby the interior of the nozzle is In testimony whereof, I have hereunto placed in communication with said chamsubscribed my name this 7th day of April,

upper portion of the nozzle, and arotary -CI- IARLES HENRI C LAUDEL.

cock plug having an passage in which the. Witnesses: discharge openlng of the cage 1s located, the GEORGES PROTTE,

inlet opening of said cage end the discharge CHAS. P. PRESSLY. 

